Did you open an issue on github on rtpengine? Rfuchs comments are always 
enlightening

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________________________________
Van: Users <[email protected]> namens John Quick 
<[email protected]>
Verzonden: Wednesday, October 28, 2020 12:51:33 PM
Aan: [email protected] <[email protected]>
Onderwerp: Re: [OpenSIPS-Users] rtpengine_delete not returning immediately

Callum,

Thanks for the suggestion. I added a rule to iptables on the OpenSIPS server to 
allow all UDP from the rtpengine server.
Unfortunately, it made no difference. I also checked the route using mtr and it 
looks fine - less than 5 ms latency, 1 drop in >4000.
Network connectivity seems unlikely to be a contributory factor because the 
offer and answer commands work exactly as I would expect.
Only the delete command exhibits a delay returning.

John Quick
Smartvox Limited


> From: Callum Guy <[email protected]>
> Sent: 27 October 2020 21:12
> To: John Q <[email protected]>; OpenSIPS users mailling list 
> <[email protected]>
> Subject: Re: [OpenSIPS-Users] rtpengine_delete not returning immediately
>
> Have you double checked it's not a firewall issue on the SIP proxy?
>
> The transport is typically UDP so there is a fair chance it's blocked.


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